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charset="utf-8" From: Haibo Chen The flexspi on imx8ulp only has 16 number of LUTs, it is different with flexspi on other imx SoC which has 32 number of LUTs. Signed-off-by: Haibo Chen Acked-by: Krzysztof Kozlowski Reviewed-by: Frank Li --- Documentation/devicetree/bindings/spi/spi-nxp-fspi.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/spi/spi-nxp-fspi.yaml b/Docu= mentation/devicetree/bindings/spi/spi-nxp-fspi.yaml index 4a5f41bde00f..902db92da832 100644 --- a/Documentation/devicetree/bindings/spi/spi-nxp-fspi.yaml +++ b/Documentation/devicetree/bindings/spi/spi-nxp-fspi.yaml @@ -21,6 +21,7 @@ properties: - nxp,imx8mm-fspi - nxp,imx8mp-fspi - nxp,imx8qxp-fspi + - nxp,imx8ulp-fspi - nxp,lx2160a-fspi - items: - enum: --=20 2.34.1 From nobody Fri Dec 19 16:45:05 2025 Received: from AS8PR04CU009.outbound.protection.outlook.com (mail-westeuropeazon11011032.outbound.protection.outlook.com [52.101.70.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1C2BC17543; Thu, 5 Sep 2024 01:26:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" From: Haibo Chen The flexspi on imx8ulp only has 16 LUTs, different with others which have up to 32 LUTs. Add a separate compatible string and nxp_fspi_devtype_data to support flexspi on imx8ulp. Signed-off-by: Haibo Chen --- drivers/spi/spi-nxp-fspi.c | 54 ++++++++++++++++++++++++-------------- 1 file changed, 35 insertions(+), 19 deletions(-) diff --git a/drivers/spi/spi-nxp-fspi.c b/drivers/spi/spi-nxp-fspi.c index fd1816befcd8..64af89323802 100644 --- a/drivers/spi/spi-nxp-fspi.c +++ b/drivers/spi/spi-nxp-fspi.c @@ -57,13 +57,6 @@ #include #include =20 -/* - * The driver only uses one single LUT entry, that is updated on - * each call of exec_op(). Index 0 is preset at boot with a basic - * read operation, so let's use the last entry (31). - */ -#define SEQID_LUT 31 - /* Registers used by the driver */ #define FSPI_MCR0 0x00 #define FSPI_MCR0_AHB_TIMEOUT(x) ((x) << 24) @@ -263,9 +256,6 @@ #define FSPI_TFDR 0x180 =20 #define FSPI_LUT_BASE 0x200 -#define FSPI_LUT_OFFSET (SEQID_LUT * 4 * 4) -#define FSPI_LUT_REG(idx) \ - (FSPI_LUT_BASE + FSPI_LUT_OFFSET + (idx) * 4) =20 /* register map end */ =20 @@ -341,6 +331,7 @@ struct nxp_fspi_devtype_data { unsigned int txfifo; unsigned int ahb_buf_size; unsigned int quirks; + unsigned int lut_num; bool little_endian; }; =20 @@ -349,6 +340,7 @@ static struct nxp_fspi_devtype_data lx2160a_data =3D { .txfifo =3D SZ_1K, /* (128 * 64 bits) */ .ahb_buf_size =3D SZ_2K, /* (256 * 64 bits) */ .quirks =3D 0, + .lut_num =3D 32, .little_endian =3D true, /* little-endian */ }; =20 @@ -357,6 +349,7 @@ static struct nxp_fspi_devtype_data imx8mm_data =3D { .txfifo =3D SZ_1K, /* (128 * 64 bits) */ .ahb_buf_size =3D SZ_2K, /* (256 * 64 bits) */ .quirks =3D 0, + .lut_num =3D 32, .little_endian =3D true, /* little-endian */ }; =20 @@ -365,6 +358,7 @@ static struct nxp_fspi_devtype_data imx8qxp_data =3D { .txfifo =3D SZ_1K, /* (128 * 64 bits) */ .ahb_buf_size =3D SZ_2K, /* (256 * 64 bits) */ .quirks =3D 0, + .lut_num =3D 32, .little_endian =3D true, /* little-endian */ }; =20 @@ -373,6 +367,16 @@ static struct nxp_fspi_devtype_data imx8dxl_data =3D { .txfifo =3D SZ_1K, /* (128 * 64 bits) */ .ahb_buf_size =3D SZ_2K, /* (256 * 64 bits) */ .quirks =3D FSPI_QUIRK_USE_IP_ONLY, + .lut_num =3D 32, + .little_endian =3D true, /* little-endian */ +}; + +static struct nxp_fspi_devtype_data imx8ulp_data =3D { + .rxfifo =3D SZ_512, /* (64 * 64 bits) */ + .txfifo =3D SZ_1K, /* (128 * 64 bits) */ + .ahb_buf_size =3D SZ_2K, /* (256 * 64 bits) */ + .quirks =3D 0, + .lut_num =3D 16, .little_endian =3D true, /* little-endian */ }; =20 @@ -544,6 +548,8 @@ static void nxp_fspi_prepare_lut(struct nxp_fspi *f, void __iomem *base =3D f->iobase; u32 lutval[4] =3D {}; int lutidx =3D 1, i; + u32 lut_offset =3D (f->devtype_data->lut_num - 1) * 4 * 4; + u32 target_lut_reg; =20 /* cmd */ lutval[0] |=3D LUT_DEF(0, LUT_CMD, LUT_PAD(op->cmd.buswidth), @@ -588,8 +594,10 @@ static void nxp_fspi_prepare_lut(struct nxp_fspi *f, fspi_writel(f, FSPI_LCKER_UNLOCK, f->iobase + FSPI_LCKCR); =20 /* fill LUT */ - for (i =3D 0; i < ARRAY_SIZE(lutval); i++) - fspi_writel(f, lutval[i], base + FSPI_LUT_REG(i)); + for (i =3D 0; i < ARRAY_SIZE(lutval); i++) { + target_lut_reg =3D FSPI_LUT_BASE + lut_offset + i * 4; + fspi_writel(f, lutval[i], base + target_lut_reg); + } =20 dev_dbg(f->dev, "CMD[%02x] lutval[0:%08x 1:%08x 2:%08x 3:%08x], size: 0x%= 08x\n", op->cmd.opcode, lutval[0], lutval[1], lutval[2], lutval[3], op->data.nby= tes); @@ -874,7 +882,7 @@ static int nxp_fspi_do_op(struct nxp_fspi *f, const str= uct spi_mem_op *op) void __iomem *base =3D f->iobase; int seqnum =3D 0; int err =3D 0; - u32 reg; + u32 reg, seqid_lut; =20 reg =3D fspi_readl(f, base + FSPI_IPRXFCR); /* invalid RXFIFO first */ @@ -890,8 +898,9 @@ static int nxp_fspi_do_op(struct nxp_fspi *f, const str= uct spi_mem_op *op) * the LUT at each exec_op() call. And also specify the DATA * length, since it's has not been specified in the LUT. */ + seqid_lut =3D f->devtype_data->lut_num - 1; fspi_writel(f, op->data.nbytes | - (SEQID_LUT << FSPI_IPCR1_SEQID_SHIFT) | + (seqid_lut << FSPI_IPCR1_SEQID_SHIFT) | (seqnum << FSPI_IPCR1_SEQNUM_SHIFT), base + FSPI_IPCR1); =20 @@ -1015,7 +1024,7 @@ static int nxp_fspi_default_setup(struct nxp_fspi *f) { void __iomem *base =3D f->iobase; int ret, i; - u32 reg; + u32 reg, seqid_lut; =20 /* disable and unprepare clock to avoid glitch pass to controller */ nxp_fspi_clk_disable_unprep(f); @@ -1090,11 +1099,17 @@ static int nxp_fspi_default_setup(struct nxp_fspi *= f) fspi_writel(f, reg, base + FSPI_FLSHB1CR1); fspi_writel(f, reg, base + FSPI_FLSHB2CR1); =20 + /* + * The driver only uses one single LUT entry, that is updated on + * each call of exec_op(). Index 0 is preset at boot with a basic + * read operation, so let's use the last entry (31 or 15). + */ + seqid_lut =3D f->devtype_data->lut_num - 1; /* AHB Read - Set lut sequence ID for all CS. */ - fspi_writel(f, SEQID_LUT, base + FSPI_FLSHA1CR2); - fspi_writel(f, SEQID_LUT, base + FSPI_FLSHA2CR2); - fspi_writel(f, SEQID_LUT, base + FSPI_FLSHB1CR2); - fspi_writel(f, SEQID_LUT, base + FSPI_FLSHB2CR2); + fspi_writel(f, seqid_lut, base + FSPI_FLSHA1CR2); + fspi_writel(f, seqid_lut, base + FSPI_FLSHA2CR2); + fspi_writel(f, seqid_lut, base + FSPI_FLSHB1CR2); + fspi_writel(f, seqid_lut, base + FSPI_FLSHB2CR2); =20 f->selected =3D -1; =20 @@ -1289,6 +1304,7 @@ static const struct of_device_id nxp_fspi_dt_ids[] = =3D { { .compatible =3D "nxp,imx8mp-fspi", .data =3D (void *)&imx8mm_data, }, { .compatible =3D "nxp,imx8qxp-fspi", .data =3D (void *)&imx8qxp_data, }, { .compatible =3D "nxp,imx8dxl-fspi", .data =3D (void *)&imx8dxl_data, }, + { .compatible =3D "nxp,imx8ulp-fspi", .data =3D (void *)&imx8ulp_data, }, { /* sentinel */ } }; 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charset="utf-8" From: Haibo Chen The flexspi on imx8ulp only has 16 LUTs, and imx8mm flexspi has 32 LUTs, so correct the compatible string here, otherwise will meet below error: [ 1.119072] ------------[ cut here ]------------ [ 1.123926] WARNING: CPU: 0 PID: 1 at drivers/spi/spi-nxp-fspi.c:855 nxp= _fspi_exec_op+0xb04/0xb64 [ 1.133239] Modules linked in: [ 1.136448] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.11.0-rc6-= next-20240902-00001-g131bf9439dd9 #69 [ 1.146821] Hardware name: NXP i.MX8ULP EVK (DT) [ 1.151647] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE= =3D--) [ 1.158931] pc : nxp_fspi_exec_op+0xb04/0xb64 [ 1.163496] lr : nxp_fspi_exec_op+0xa34/0xb64 [ 1.168060] sp : ffff80008002b2a0 [ 1.171526] x29: ffff80008002b2d0 x28: 0000000000000000 x27: 00000000000= 00000 [ 1.179002] x26: ffff2eb645542580 x25: ffff800080610014 x24: ffff8000806= 10000 [ 1.186480] x23: ffff2eb645548080 x22: 0000000000000006 x21: ffff2eb6455= 425e0 [ 1.193956] x20: 0000000000000000 x19: ffff80008002b5e0 x18: fffffffffff= fffff [ 1.201432] x17: ffff2eb644467508 x16: 0000000000000138 x15: 00000000000= 00002 [ 1.208907] x14: 0000000000000000 x13: ffff2eb6400d8080 x12: 00000000fff= fff00 [ 1.216378] x11: 0000000000000000 x10: ffff2eb6400d8080 x9 : ffff2eb697a= dca80 [ 1.223850] x8 : ffff2eb697ad3cc0 x7 : 0000000100000000 x6 : 00000000000= 00001 [ 1.231324] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 00000000000= 007a6 [ 1.238795] x2 : 0000000000000000 x1 : 00000000000001ce x0 : 00000000fff= fff92 [ 1.246267] Call trace: [ 1.248824] nxp_fspi_exec_op+0xb04/0xb64 [ 1.253031] spi_mem_exec_op+0x3a0/0x430 [ 1.257139] spi_nor_read_id+0x80/0xcc [ 1.261065] spi_nor_scan+0x1ec/0xf10 [ 1.264901] spi_nor_probe+0x108/0x2fc [ 1.268828] spi_mem_probe+0x6c/0xbc [ 1.272574] spi_probe+0x84/0xe4 [ 1.275958] really_probe+0xbc/0x29c [ 1.279713] __driver_probe_device+0x78/0x12c [ 1.284277] driver_probe_device+0xd8/0x15c [ 1.288660] __device_attach_driver+0xb8/0x134 [ 1.293316] bus_for_each_drv+0x88/0xe8 [ 1.297337] __device_attach+0xa0/0x190 [ 1.301353] device_initial_probe+0x14/0x20 [ 1.305734] bus_probe_device+0xac/0xb0 [ 1.309752] device_add+0x5d0/0x790 [ 1.313408] __spi_add_device+0x134/0x204 [ 1.317606] of_register_spi_device+0x3b4/0x590 [ 1.322348] spi_register_controller+0x47c/0x754 [ 1.327181] devm_spi_register_controller+0x4c/0xa4 [ 1.332289] nxp_fspi_probe+0x1cc/0x2b0 [ 1.336307] platform_probe+0x68/0xc4 [ 1.340145] really_probe+0xbc/0x29c [ 1.343893] __driver_probe_device+0x78/0x12c [ 1.348457] driver_probe_device+0xd8/0x15c [ 1.352838] __driver_attach+0x90/0x19c [ 1.356857] bus_for_each_dev+0x7c/0xdc [ 1.360877] driver_attach+0x24/0x30 [ 1.364624] bus_add_driver+0xe4/0x208 [ 1.368552] driver_register+0x5c/0x124 [ 1.372573] __platform_driver_register+0x28/0x34 [ 1.377497] nxp_fspi_driver_init+0x1c/0x28 [ 1.381888] do_one_initcall+0x80/0x1c8 [ 1.385908] kernel_init_freeable+0x1c4/0x28c [ 1.390472] kernel_init+0x20/0x1d8 [ 1.394138] ret_from_fork+0x10/0x20 [ 1.397885] ---[ end trace 0000000000000000 ]--- [ 1.407908] ------------[ cut here ]------------ Signed-off-by: Haibo Chen --- arch/arm64/boot/dts/freescale/imx8ulp.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi b/arch/arm64/boot/d= ts/freescale/imx8ulp.dtsi index e32d5afcf4a9..43f543768444 100644 --- a/arch/arm64/boot/dts/freescale/imx8ulp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8ulp.dtsi @@ -384,7 +384,7 @@ pcc4: clock-controller@29800000 { }; =20 flexspi2: spi@29810000 { - compatible =3D "nxp,imx8mm-fspi"; + compatible =3D "nxp,imx8ulp-fspi"; reg =3D <0x29810000 0x10000>, <0x60000000 0x10000000>; reg-names =3D "fspi_base", "fspi_mmap"; #address-cells =3D <1>; --=20 2.34.1